#ifndef STONEWT_H_
#define STONEWT_H_
class Stonewt
{
private:
       enum {Lbs_per_stone = 14};
       int stone;
       double pondes;
       double pds_left;
       static int num;
public:
    explicit Stonewt(double pds);
    Stonewt(int st, double lpds);
    Stonewt();
    ~Stonewt();
    
    void show_stone() const;
    void show_lbs() const;
    // 类型转换方法
    explicit operator int();
};

#endif
